Separable fastener



Feb 27, 1925i V. PUC

SEPRABLE FASTENER Fi led Aug.

` narily voarnonrnesor rnAeUn-VINOHRADY. nonni/rra.

snrartasnn rnsfrnnnri.

Application filed August 1, 1919. Serial No. 314,762.

To all whom t may concern:

Be it known that l, VoJ'rnoH PUC, a citizen of the @Zeche-Slovak Republic, resid ing at Prague-Vinohrady, in Bohemia, havc invented certain new and useful improve ments in Separable Fasteners (forwhich l have filed applications in Austria March 2l, Patent No. 76,404, and in GermanyY 191e 'Marh 25, 191e, No. 295,067), of Whicnuie kfollowing is a specification. Y

This invention relates to separable fas-V teners of the kind generally known as press buttons or snap fasteners and whichl are composed of two members, a stud memberv and a l socket member,v whichlatter carries springs which engage the stud when the latter ism the socket. Each of said members is ordiformed with what are termed thread holes through which the thread is inserted when the members are being attached to the garment. l-leretofore thesesl thread holes have been formedin the body of the device and have not extended intoV or across the flanged orcurled periphery or edge thereof, c

Vstud member of the fastener may be made and for this reason the threads ordinarily lie above the body of the device and add to the thickness thereof.

According to my inventionY the thread holes are formed close to the edge or periphery'of the base of the fastening device and also extend into the flanged or curled over edge or periphery of the base of the device,

and are hence held below the surface of the body portion of the base. u

Another feature of the invention consists of the base bysuitably slitting the metal and then turning over and down the metal within the slits and curlingit around the spring which the socket member c contains.

In the accompanying drawings, l have illustrated the socket member. u but some of the improvements may be applied to the stud member also.

Figure 1 isa plan view of a socket member embodying my improvements.

Figure 2 shows a transverse section of the same. Y Y Y l Figure 3 is a plan view-showing how the fastener is applied to a piece of cloth.

Figure 4 is a side elevation further illustrating the manner in which the fastener is applied to the cloth.

The socket member A comprisesa body portion or base a formed with a cap, hood or dome cr of usual construction. B indicates springs of usual vconstruction within the socket'member. The edge or periphery of the Vbase is bent or curled around the spring in the usual way as indicated at Z) in Fig. 2. As thus far described the device is similar to known devices. C- indicates thread holes formed in the body of the fastener. TheseY are formed. by slitting the metal and then l turning down the 'portion c lwithin the slits and bending it over and around the spring in the manner clearly indicated in Figures l and?. In thisway an additional means is provided for holding the spring or `springs in place: It will be observed that the slits kextend into the redge or periphery Vof the body and hence when the threads D are applied to cloth E in the manner indicated in Figures 3 and l they will lie below the main `body portion anda more: secure fastening is provided,v the threads being arranged below the highest part of the body.

As before stated the thread holes in the sol in a similar way, but ofcourse the stud inember is not provided with springs and thebent over portions c are merely bent and vcurled out of the way in the manner indicated. i

By my improvements the button may have Vthe necessary thickness to accommodate the spring and to provide a socket and the threads do notfadd to the thickness of the button. The threads bind the button closely and securely to the cloth and less thread is required.

The inwardly turned parts c which embrace I the spring not only serve as additional means for holding the spring 'inrplace but they provide curved or rounded portions on which the threads rest instead of sharp portions as heretofore which tend to cut the threads.

l' claim as my invention vl. A snap fastener member made ofk sheet metal having aconvex body portion and a curled periphery andhaving thread holes formed in its body portion near its periphery, the sidewalls of which extend to the extreme outer edge thereof, the outer wall of each thread hole having a curved bearing surface forvthe thread.

' 2. A snap fastener member having a curled Y peripheral or edge portion, a spring held by said curled peripheral edge portion and said vkmember being provided with thread holes Which extend into the peripheral portion of the member and Which are provided with*l metal portions bentl downwardly through ythe thread holes and engaging the 5 spring.

- 3. A snap fastener member ha-Vinga curled edgeV or periphery, and provided With thread holes formed by producing slits in the member and bending inwardly and curling the metal between the slits', t0 form a part of the peripheral edge of the member.

ln testimony whereof, I have hereunto subscribed my name.

' VOJ TECH PUC. 

